Enginetech ST21251 Engine Valve Seat - High Chrome Intake (4-Pack)

The Enginetech ST21251 is a precision-engineered engine valve seat designed for reliable sealing and long-lasting performance in engine rebuilds and cylinder head restoration. This set includes four high-chrome valve seats manufactured to exacting specifications for consistent quality and proper fitment.

Technical Specifications:

• Inside Diameter: 1.8125 inches
• Outside Diameter: 2.1305 inches
• Thickness: 0.250 inches (1/4 inch)
• Seat Angle: 45 degrees
• Material: High-chrome cast construction
• Application: Intake position

Premium Construction: Manufactured from high-chrome material, these valve seats are engineered to withstand extreme temperatures and pressures within the combustion chamber. The precision machining ensures optimal contact between the valve face and seat, preventing compression loss and maintaining peak engine efficiency. Enginetech valve seats are produced using US-made machinery for final cuts and finishes, delivering professional-grade quality for engine builders and technicians.

Compatible with various AMC, Jeep, Chevrolet, Ford, Pontiac, and IHC Navistar applications. Ideal for engine rebuilds, cylinder head restoration, and valve train component replacement requiring this specific valve seat dimension.